Register Login
FIAT Auto Specialist Team
Reply
 
Thread Tools
Old 14-03-2003   #1
Join Date: Mar 2003
Location: Heerlen, Netherlands.
Posts: 36
Thanks: 0
Trader Rating: 0
15 inch wheels for Panda

I've read on some other Forum that it is impossible to fit 15 inch wheels, without major modifications to the car. And that if you'd try to mount 15 inch wheels on a regular Panda, they would hit the fenders, but I think 15 inch wheels CAN be fit without much of a problem.

Here's the normal situation:
135/70 R13 so the height of the tire is 70% of 135mm= 94.5mm. A 13 inch wheel is 33.02 centimeter high, so the total height of the wheel is (2x9.45cm)+33.02cm=51,92cm

With 15 inch wheels (and low-profile tires!)
195/45 VR15 so here the height of the tire is 45% of 195mm=87.75mm. 15 inch wheels are 38.1cm high, so the wheel is a total of (2x8.775)+38.1=55.56cm

So the difference in diameter is only 55.56-51.92=3.64cm, so the radius of the wheel would only change half of that, 1.82cm. There's plenty of room on either side of the tire to make 'm 1.8 cm bigger (on either side).

So the old wheels were 5x13 inch with an ET of 27mm. 5 inch is 12.7cm, so space from the hub to the inner edge of the wheel is 6.35+0.27=6.62cm

The new wheels would be 7x15, ET will be the same. 7 inch is 17.78cm, so half of that + the ET value = 9.16cm from the hub to the inner edge of the wheel.

The difference is 9.16-6.62=2.54cm (exactly 1 inch) I'm not sure about this, but it seems to me it wouldn't be much of a problem if a wheel was pointed inwards 2 and a half centimeter more.

Am I missing something here, or is this right?

JvE


~~Nulla Tenaci Invia est Via~~
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

sabeltandcavia is offline Reply With Quote Quote 
Old 14-03-2003   #2
Join Date: Oct 2002
Location: bagshot, Surrey
Posts: 367
Thanks: 0
Trader Rating: 0
United Kingdom 
Here you go;

<font face="Stencil">Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
135/70-13 3.7in 10.2in 20.4in 64.2in 987 0.0%
185/50-15 3.6in 11.1in 22.3in 70.0in 905 9.0%
165/50-15 3.2in 10.7in 21.5in 67.5in 938 5.2%
165/45-15 2.9in 10.4in 20.8in 65.5in 967 2.0%
</font id="Stencil">

Therefore 165/50-15 will be about 5% out (bearable) but yes a near match'll be 195/45-15 ,dunno if yoo can get them (expensive!)

oh yeah - almost forot
195/45-15 3.5in 11.0in 21.9in 68.8in 921 -3.7%


[img]http://image1ex.villagephotos.com/891466.jpg
[/img]
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Surrey Sporting is offline Reply With Quote Quote 
Old 14-03-2003   #3
Join Date: Jan 2003
Location: Birmingham, United Kingdo
Posts: 1,644
Thanks: 2
Trader Rating: 0
United Kingdom 
Hi

I'm interested to know where you got the offset figures from:[?]

Also I thought the 135 tyres are 80 section on 13 inch..

The only wheel info I've got so far is for a Basic (narrow tyre) Panda: they are quoted as 13 X 4B in the (old) Panda drivers handbook.
There is no mention of offsets, or other wheel sizes.


There is an adjacent thread about offsets (to do with wheels off a SEI - will they fit (correctly) a Panda [?] ).

I've looked at

http://www.chris-longhurst.com/carbibles/tyre_bible.html

Which is worth a read, and has a tyre size calculator too which will work out rolling radii, and differences between two wheel/tyre pairs as percentages and speedo error.


Anyway, we're trying to find out the offset on standard wheels for 155x65 x 13 fitment.

Which might well be different wheels, compared with the 135X80 X 13


This weekend there is a _chance_ either I or Paul will find something stamped on the wheels of our respective Pandas.

It's just possible we'll jointly get to the bottom of the wheel issue.


Regards

John H
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

John H is offline Reply With Quote Quote 
Old 14-03-2003   #4
Owner of Gemma the Panda
 
PandaManPaul's Avatar
Join Date: Dec 2002
Location: Worcs.
Posts: 479
Thanks: 0
Trader Rating: 0
PandaManPaul has donated!
United Kingdom 
I remembered! :) And I've put it in the 'offsets for Panda' thread, which is here

Paul
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

PandaManPaul is offline Reply With Quote Quote 
Old 15-03-2003   #5
Join Date: Jan 2003
Location: Birmingham, United Kingdo
Posts: 1,644
Thanks: 2
Trader Rating: 0
United Kingdom 
My (final?) contribution to this thread is also in the "offsets for Panda" thread.

John H
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

John H is offline Reply With Quote Quote 
Old 17-03-2003   #6
Join Date: Jan 2003
Location: Birmingham, United Kingdo
Posts: 1,644
Thanks: 2
Trader Rating: 0
United Kingdom 
Really last contribution :)

I've finally remembered/found where I'd seen a similar thread before:

http://www.preloved.co.uk/forums/message.cfm?thread=3809&message=13608

The view seems to be 15 inch is/can be a problem on the back. Some of the messages either side are relevant too.


Regards


John H

__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

John H is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
16 or 17 inch wheels for Punto HGT / Abarth punto_power_nr_1 Lets Talk FIAT 9 25-06-2006 18:01
(S) 18 inch Wheels? tobiasolsson Stilo 28 27-05-2004 05:21
(S) Alloy wheels are damaged Tashy Stilo 16 19-05-2004 23:11
15 Inch Alloy Wheels For FIAT Marea Tziallas Auction Watch 0 14-05-2004 23:24